The brand new Crux delivers 20% more water per sip, with an ergonomic handle for easier refilling, and an on/off lever that makes it easy to prevent leaks.. . Offers 20% more water per sip. Leak-proof cap is easier to open and close. On/off lever lets you seal your drinking tube shut with one hand. Hydroguard 886798004570 30980400006 1351001015